06-28-2002, 05:36 PM
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CC Member
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Join Date: Jun 2001
Location: Washington DC Metro (Virginia),
VA
Cobra Make, Engine: Classic Roadsters, Tweaked 351W, T-5Z, CRII Tech Support Team.
Posts: 1,895
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Ditto the above about Total Seal bringing out a gapless ring that goes in the top ring grove. They might even have a web site.
The other manufacturer of gapless rings that I'm aware of is Childs & Albert. Might look them up also.
Almost sprung for a set in my own engine. They are supposed to increase engine vacuum to the extent that some folks install restrictor orifices in their PCV line.
The major advantage, as I understand it, is that as the rings wear with mileage, the gapless feature maintains the ring seal, whereas a conventional 1 piece ring gap opens up allowing blowby.
Might be a good question to ask, "Howcome the automakers don't use them?" The automakers don't use roller rocker arms either.
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